Question

Tính nhanh:

100.000 - ( 47 x 75 + 47 x 24 + 47 ) 

276 x 50 + 276 x 36 + 1104

Answer 1

=100000-(47.(75+24+1)       b)    =276.(50+36+4)

=100000-4700                              =276.90

=95300                                         =24840

Answer 2

\(100000-\left(47.75+47.24+47\right)\)

\(=100000-\left(47.75+47.24+47.1\right)\)

\(=100000-\left[47.\left(75+24+1\right)\right]\)

\(=100000-47.100\)

\(=100000-47000\)

\(=53000\)

\(276.50+276.36+1104\)

\(=276.50+276.36+276.4\)

\(=276.\left(50+36+4\right)\)

\(=276.90\)

\(=24840\)

Answer 3

100000-(47.75+47.24+47)

=100000-[47.(75+24+1)]

=100000-[47.(99+1)]

=100000-[47.100]

=100000-4700

=96300

276x50+276x36+1104

=276(50+36)+276.4

=276.86+276.4

=276.(86+4)

=276.90

=24840

Answer 4

Mình sửa câu a thành : 

\(100000-\left(47.75+47.24+47\right)\)

\(=100000-\left(47.75+47.24+47.1\right)\)

\(=100000-\left[47.\left(75+24+1\right)\right]\)

\(=100000-47.100\)

\(=100000-4700\)

\(=95300\)